Working Machine Stop-Distance Measurement for PDS Brake Testing
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Solution Overview
Problem
Existing proximity detection systems (PDS) in working machines lack a reliable and efficient method to measure the stopping distance, which is crucial for ensuring safety and preventing collisions.
Innovation Solution
A stop distance measuring apparatus that includes a user interface, at least one processor, and memory with computer program code, configured to receive speed parameters, retrieve speed information from the working machine's controller or engine control unit, send commands to control the machine's speed, and calculate the stopping distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a proximity detection system is implemented to detect persons or objects, then collision prevention capability is improved, but the system lacks reliable stopping distance measurement capability
Solution Approach 1:
The patent introduces a dedicated stopping distance measuring apparatus as an intermediary device that interfaces between the proximity detection system and the working machine's control systems. This separate measurement system provides accurate stopping distance data without interfering with the primary PDS collision prevention function, thereby resolving the contradiction between reliability and measurement precision.
Solution Approach 2:
The patent replaces manual or mechanical stopping distance measurement methods with an electronic measurement system that uses processors, memory, and computer program code to automatically calculate stopping distances based on speed parameters and time values. This substitution provides more reliable and precise measurements while maintaining system integration.
2Ease of operation
If manual braking testing is performed to measure stopping distance, then basic measurement capability is achieved, but testing reliability and consistency are poor due to human reaction time variations
Solution Approach 1:
The stopping distance measuring apparatus performs self-service by automatically receiving speed parameters, monitoring speed information values, sending stop commands, and calculating stopping distances without requiring manual intervention during the actual measurement process. This automation eliminates human reaction time variations and ensures consistent, reliable testing results while maintaining ease of initial setup.
Solution Approach 2:
The system implements feedback by continuously monitoring speed information values from the working machine's controller or ECU and using this data to automatically determine when to send stop commands and calculate stopping distances. This closed-loop feedback mechanism ensures accurate and consistent measurements independent of human operator variability.
3Adaptability or versatility
If stopping distance measurement system is integrated with existing PDS and VIC interfaces, then system compatibility and ease of installation are improved, but the complexity of system integration increases
Solution Approach 1:
The stopping distance measuring apparatus is designed with universal compatibility by implementing standardized interfaces that work with existing PDS and VIC systems. The apparatus can receive speed parameters from multiple sources and send commands through various interfaces, making it adaptable to different working machine configurations without requiring custom integration for each system, thereby managing complexity while maintaining versatility.
Data Source
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AI summary
Various example embodiments relate to an apparatus for measuring stopping distance of a working machine. The working machine comprising: a user interface, at least one processor, and at least one memory including a computer program code. The at least one memory and the computer code configured to, with the at least one processor, cause the apparatus at least to: receive at least one speed parameter based on at least one user input on the user interface, receive at least one speed information value from a controller or the engine control unit of the working machine, send at least one command to the controller or the engine control unit to at least stop the working machine when the received speed information value is equal to the at least one speed parameter, and calculate the stopping distance of the working machine. Also a method and a system are disclosed.